Automatic monkey-wrench.



J. P. RUFFENO.

AuoMATlc MONKEY WRENCH.

APPLICATION FILED MAY 29. 191?.

Patented Mar. 5, 1918.

.Ffayljefz "Unrrnn sra-'rus PATENT onirica.A

JOSEPH P. animano, on ornnousas, LOUISIANA..

AUTOMATIC Monkey-Wannen.

Specification of Letters Patent.

Patented'pMar. 5, 1918.

Application led May 29, 191'?. Serial N O. 171,703.

which is provided with an adjustable jaw moved to a desired set position.

Another object ot' `this invention is the production of a simple andeiiieient means 'tor holding the adjustable jaw in a set `position. Y

With these and other objects Yin view, this invention consists oircertain novel constructions, combinations; and arrangements. lof parts as will be hereinafter more fully described and claimed.

ln the drawings:

Figure 1 is a side elevation of the wrench.

F ig. 2 is a central vertical section thereof.

Fig. 3 is a rear elevation of a portionot the shank of the wrench. v

F ig. 4C is a section taken on line 1%4 of Fig. 1.

Fig. 5 is a section taken on line 5-5 of Fig. 1. j

Fig. 6 is a detail perspective ot' thelatch used in connection. with the present invention.

Fig. 7 is an end View of the latch shown in Fig. 6 in an operative position.

Fig. 8 is a detail perspective view of a modilied form ot the latch which may he used in connection with the present in`ven tion.

By referring to the drawings it will be seen, that 1 designates the handle' or shank ol the wrench which is provided with a stationary jaw 2 which jaw 2 is provided with a plurality oit gripping teeth 3 formed upon the lace thereof, which gripping teeth are cut to converge toward each other near the center of the jaw as illustrated clearly in Fig. l of the drawings. A stationary shank l is secured to the jaw 2 and comprises an and which may he clearly and conveniently elongated body having a jaw head 5 formed upon the top thereof as clearly shown in Figs.

il and 2 Ot the drawings. This shank 4; isV

provided with a notch 5 formed in the rear :tace thereof', within which .notch 5 fits a reduced web or binding strap 7. This binding strap 'l' .is riveted or otherwise secured to the sides of the jaw 2 as illustrated in Fig. l oi the drawings and it will be seen that the Ystrap 7 will constitute an eiiicient guide l'or the depending fingers S of the adjustable `jaw 9. It should he understood that the shank Vportion et is formed integral with the jaw 2111s shown in Fig. 2 of the drawings. The adjustable jaw 9 also'carries a guide plate 10 which is secured to the frontedges ot the` fingers as shown in Figs. 1 and 2 ot the drawings and it will, therefore, he seen that an `eitlicient guide is provided` for providing wide bearing space for the shank 1 while passing through the adjustable jaw 9. A ratchet bar .11 is secured to the rear of the adjustable jaw 9 by fitting in the bifurthe drawings. rlhis ratchet bar l1 extends down through a socket 13 formed in the handle 1 and is engaged by the lower end thereof by' means ot' an expansion spring 141-, which spring 1d is seated in a socket 15 formed in the handle 1. A removable plate 16 is secured to the` handle 1 at the lower end thereoil and is adapted to close the lower end oithe socket 15 within which the spring lll is mounted. It will, therefore, be seen that this plate 16 may be removed for the purpose oi obtaining access to the socket l5. The plate 1G is provided with a beveled rear edge 17 which lits against the beveled edge 18 of the handle 1.

A latch 19 extends through the jaw 2 and this latch 19 carries a spring 22 which is secured at one end to the plate 20 whichis secured to the jaw 2 and at the other end to the latch 19in order to at all times yieldably hold the latch 19 in engagement with the ratchet teeth 2l termed upon the ratchet bar 11. The latch 19 passes through a plate 20 formed upon the edge 2 as illustrated in Fig. 2 ot' the drawings.

The latch 19 is provided with a rearwardly extending end 23 which is then tolded to extend forwardly tor providinga for- Wardly extending finger 24, which forwardly extending finger Qa terminates in a `tooth engaging lip 25. The tooth engaging lip 25 engages the ratchet teeth 21 upon the ratchet bar l1 for holding the adjustable jaw 9 in a set position. It ot course should be understood that the adjustable jaw 9 is provided with suitable gripping teeth 26 upon the underface thereof tor coperating with the gripping teeth 3 formed upon the adjustable jaw 2. j j

As shown in Figs. t vand `8 ofthe drawings, a modified fform of a latch 27 is illustrated which comprises an elongated bar havingan operating knob 'Q8 formed atene end. A tooth engaging lip29 is carried `by the opposite end of the latch 27 and is provided with a `rearwardly extending thumb engaging tongue 30, which is adapted to be `engaged bythe operator for moving the tooth engaging lip 29 out of engagement with "the ratchet teeth 21 carried by the ratchet bar 11. It should be understood that the structure as shown in Figs. 6 and 7 may `also be thrown 'out oit' engagement with the ratchet `teeth 21 by means of the thumb of the operator engaging the rearwardly extending portions 23 and 2A of the latch 19.

From the foregoing description, it will be seen that a very simple and eiiicient device has been provided for etliciently adjusting a wrench so that the desired sized nut or other object `may be gripped thereby, whereby it Yshould be `understood that the object may be either gripped between the jaws 2 and 9 or between the jaws 9 and 5.

What is claimed is zl. A monkey wrench of the class described comprising a handle, a stationary jaw integrally formed upon said handle, a stationary shank integrally secured to said stationary jaw and projecting above said staitionary jaw, a jaw h ard secured to the upper `end of said shank, an adjustable jaw slidably mounted upon said shank, said adjustable jaw provided with a plurality `ot lingers engagingand sliding upon the side of said shank, a strap secured to said shank and also secured to the sides of said stationary jaw and constituting a guiding loop,V said depending tingers or said adjustable jaw `extending therethrough, a ratchet bar secured to the rear end ot said adjustable jaw, means engaging said ratchet bar for holding the same in set position, and yieldable means positioned within said handle for normally urging said adjustable jaw to a closed position with respect to said jaw head.

2. A monkey wrench et the class described comprising a handle, a stationary jaw integrally formed upon said handle, a stationary shank integrally secured to said station- `ary jaw and projecting above said stationary jaw, a. jaw head secured to the upper end of said shank, an adjustable jaw slidably mounted upon said shank, said adjustable jaw provided with a plurality oi fingers engaging and sliding upon the side of said shank, a strap secured to said shank and also secured to the sides of said stationary jaw and constituting a guiding loop, said depending lingers ot said adjustable jaw extending therethrough, a ratchet bar lsecured to the rear end of said adjustable jaw, means engaging said ratchet bar for holding the same in set position, yieldable means positioned within said handle for normally urging said adjustable jaw to a closed position with respect to said jaw head, a latch carried by said stationary jaw, a spring carried by said latch, means for `facilitating thethrowing of said latch to anV inoperative position, and said latch provided with a tooth engaging end for engagingthe teethof said ratchet bar `for holding said adjustable jaw in set position.

3. A monkey Wrench ot the class described comprising a handle, a stationary jaw integrally `formed upon said handle, a stationary shank integrally secured to said stationary jaw and projecting above said stationary jaw, a jaw head secured to theupper end of said shank, an adjustable jaw slidably mounted upon said shank, said adjustable jaw provided with a plurality of fingers engaging and sliding `upon the side of said shank, al strap secured to said shank and also secured to the `sides of said stationary jaw and constituting a guiding loop, said depending lingers `ot said adjustable jaw extending therethrough, a ratchet bar*secured to the rear end of said adjustable jaw, means engaging said ratchet `bar for holding the same in set position, yieldable means positioned within said handle for normally urging said adjustable jaw to a closed position with respect to said jaw head, said stationary jaw provided with an aperture formed therein, a` latch mounted therein, a spring' carried by said latch and secured atene end to said jaw and at the other end to said latch, and said latch provided with a rearwardly extending portion terminating in a forwardly extending portion, said forwardly extending portion being placed above said rearwardly extending portion and terminatingin a tooth engaging tongue for engaging the teeth of said ratchet bar, said forwardly and rearwardly extending portions ot' said latch being adapted to facilitate the throwing of said tooth engaging tongue out of engagement with the teeth of said ratchet bar.`

a. A Wrench of the class described comprising a handle, a stationary jaw, a shank integrally secured to said stationary jaw, a jaw head carried by said shank, said shank vprovided with a transversely extending notch upon the rear face thereof, a'metallie strap secured to the side of said stationary jaw and provided with a. reduoedweb orf tion fitting in said notch, an adjustable jaw, means for holding' said adjustablerjaw in a -f set position, said adjustable jaw provided with depending side fingers Working through said notch and strap, a guide plate secured to the front faces of said fingers and eomprising a Wide bearing portion for holding saidadjustable jaw upon said shank, means l0 for holding said adjustable jaw in a set position While said Wrench is in operation.

In testimony whereof I hereunto ax my signature.

JOSEPH P. RUFFENO.

(lapins of this patent may be obtained for ve tents each, by addressing the "Commissioner of Patenti,

Washington, D. 0. 

